WAGO-I/O-SYSTEM 750
Connect Devices
33
750-464 2/4 AI RTD configurable
Manual
Version 1.0.1
5.2.1.2.2 Measuring Circuit Line Break Detection
Metering in series results in a special behavior in the case of wire break, such that
this is always detected for both sensors connected to a measuring circuit. This
applies independently of the selected setting for "indicate wire break/short circuit"
(see section "Register assignment", Register 32).
5.2.1.2.3 Influencing a Measuring Circuit Channel through a Quick Change in
Temperature
As a rule, temperatures change relatively slowly. If a channel's applied resistance
changes over a short period of time by a large resistance value (large in relation to
the converted temperature change), then this can influence the other channel
within the measuring circuit.
5.2.2
750-464 (RTD) Version, 2-Channel Operation
5.2.2.1
2 x 2-Wire
Figure 14: Connection example, version 750-464 (RTD), 2-channel, 2 x 2-wire